Cynergy3 D1 Form C (changeover) Relay Series

  • Cynergy3

Product Features

  • D Size Form C (Changeover) relays
  • UL Approved
  • 100W switching po
  • Excellent switching characteristics
  • With or without magnetic screen
  • UL


  • Medical
  • Power Control
  • Test and Measurement


The D1 series of reed relays with changeover contacts offers 100W switching power (at 33.3V DC switching voltage), an isolation across contacts of 0.75kV (AC or DC peak) and highly reliable tungsten contacts. These relays utilise high vacuum reed switches to achieve their excellent switching characteristics, and are often used in safety critical applications. The D1 series of relays is offered with or without magnetic screen and is PCB mountable, with custom mounting options available upon request. The series has been UL approved as per pollution degree 2 classification. The D1 series offers a working temperature range from -40°C up to +65°C.

  • UL approved, D Size Form C (Changeover) relays
  • 100W switching power
  • Tungsten changeover contacts
  • Isolation across contacts 0.75kV (AC or DC peak)
  • Maximum switching voltage of 240V DC
  • Choice of three coil voltage ratings – 5V, 12V or 24V DC
  • PCB mount (custom mounting options available upon request)
  • Available with or without magnetic screen
  • Temperature range from -40°C up to +65°C

Typical applications for the Cynergy3 D1 changeover relay series include:

  • Test equipment
  • High voltage power supplies

The below table gives the full specifications for each resistor model available including the Cynergy3 D1 series:

Cynergy3 D1 series specifications


Weight 30.00000 kg
Dimensions 50.50 × 16.80 × 15.50 mm
Additional Features

D Size Form C (Changeover) relays UL Approved 100W switching po Excellent switching characteristics With or without magnetic screen

Voltage Rating

Series / Model

Coil Voltage

, ,

Temperature Range (°C)

Magnetic Screen


Termination / Connection Type

Contact Material

RoHS Compliant Product – Cynergy3

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

Cynergy3 D1 Series technical library

We are pleased to provide you with a range of additional content including product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:



Cynergy3 D1 Changeover Relay Series Datasheet
Application notes for Cynergy3 high voltage reed relays
How to protect reed switch contacts
Cynergy3 provide High Voltage Reed Relays to DIAN racing
Cynergy3 is delighted to be sponsoring Elefant Racing Bayreuth

Cynergy3 D1 Form C (changeover) Relay Series

Calculators and Converters

Work out what you need for your project. Go to calculators and convertors

Contact us if you need your items quicker or need more than in stock.

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